gecko/js/xpconnect/loader/mozJSComponentLoader.h

150 lines
4.7 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "plhash.h"
#include "jsapi.h"
#include "mozilla/ModuleLoader.h"
#include "nsIJSRuntimeService.h"
#include "nsISupports.h"
#include "nsIXPConnect.h"
#include "nsIFile.h"
#include "nsAutoPtr.h"
#include "nsIObjectInputStream.h"
#include "nsIObjectOutputStream.h"
#include "nsITimer.h"
#include "nsIObserver.h"
#include "xpcIJSModuleLoader.h"
#include "nsClassHashtable.h"
#include "nsDataHashtable.h"
#include "nsIPrincipal.h"
#include "mozilla/scache/StartupCache.h"
#include "xpcIJSGetFactory.h"
/* 6bd13476-1dd2-11b2-bbef-f0ccb5fa64b6 (thanks, mozbot) */
#define MOZJSCOMPONENTLOADER_CID \
{0x6bd13476, 0x1dd2, 0x11b2, \
{ 0xbb, 0xef, 0xf0, 0xcc, 0xb5, 0xfa, 0x64, 0xb6 }}
#define MOZJSCOMPONENTLOADER_CONTRACTID "@mozilla.org/moz/jsloader;1"
class JSCLContextHelper;
class mozJSComponentLoader : public mozilla::ModuleLoader,
public xpcIJSModuleLoader,
public nsIObserver
{
friend class JSCLContextHelper;
public:
NS_DECL_ISUPPORTS
NS_DECL_XPCIJSMODULELOADER
NS_DECL_NSIOBSERVER
mozJSComponentLoader();
virtual ~mozJSComponentLoader();
// ModuleLoader
const mozilla::Module* LoadModule(mozilla::FileLocation &aFile);
nsresult FindTargetObject(JSContext* aCx,
JS::MutableHandleObject aTargetObject);
static mozJSComponentLoader* Get() { return sSelf; }
void NoteSubScript(JS::HandleScript aScript, JS::HandleObject aThisObject);
protected:
static mozJSComponentLoader* sSelf;
nsresult ReallyInit();
void UnloadModules();
JSObject* PrepareObjectForLocation(JSCLContextHelper& aCx,
nsIFile* aComponentFile,
nsIURI *aComponent,
bool aReuseLoaderGlobal,
bool *aRealFile);
nsresult ObjectForLocation(nsIFile* aComponentFile,
nsIURI *aComponent,
JSObject **aObject,
char **location,
bool aCatchException,
JS::MutableHandleValue aException);
nsresult ImportInto(const nsACString &aLocation,
JS::HandleObject targetObj,
JSContext *callercx,
JS::MutableHandleObject vp);
nsCOMPtr<nsIComponentManager> mCompMgr;
nsCOMPtr<nsIJSRuntimeService> mRuntimeService;
nsCOMPtr<nsIPrincipal> mSystemPrincipal;
nsCOMPtr<nsIXPConnectJSObjectHolder> mLoaderGlobal;
JSRuntime *mRuntime;
JSContext *mContext;
class ModuleEntry : public mozilla::Module
{
public:
ModuleEntry() : mozilla::Module() {
mVersion = mozilla::Module::kVersion;
mCIDs = NULL;
mContractIDs = NULL;
mCategoryEntries = NULL;
getFactoryProc = GetFactory;
loadProc = NULL;
unloadProc = NULL;
obj = nullptr;
location = nullptr;
}
~ModuleEntry() {
Clear();
}
void Clear() {
getfactoryobj = NULL;
if (obj) {
JSAutoRequest ar(sSelf->mContext);
JSAutoCompartment ac(sSelf->mContext, obj);
JS_SetAllNonReservedSlotsToUndefined(sSelf->mContext, obj);
JS_RemoveObjectRoot(sSelf->mContext, &obj);
}
if (location)
NS_Free(location);
obj = NULL;
location = NULL;
}
static already_AddRefed<nsIFactory> GetFactory(const mozilla::Module& module,
const mozilla::Module::CIDEntry& entry);
nsCOMPtr<xpcIJSGetFactory> getfactoryobj;
JSObject *obj;
char *location;
};
friend class ModuleEntry;
// Modules are intentionally leaked, but still cleared.
static PLDHashOperator ClearModules(const nsACString& key, ModuleEntry*& entry, void* cx);
nsDataHashtable<nsCStringHashKey, ModuleEntry*> mModules;
nsClassHashtable<nsCStringHashKey, ModuleEntry> mImports;
nsDataHashtable<nsCStringHashKey, ModuleEntry*> mInProgressImports;
nsDataHashtable<nsPtrHashKey<JSScript>, JSObject*> mThisObjects;
bool mInitialized;
bool mReuseLoaderGlobal;
};